Threats Tagged 'firefox extensions'

Six Chrome and Firefox extensions linked through shared code, C2 infrastructure, and publishing history have been identified targeting cryptocurrency traders. Four malicious extensions steal authenticated session tokens and wallet data from Axiom Trade and Padre users, while two earlier extensions reveal a pattern of repackaging crypto trading tools. The extensions J7Tracker, VREO, and Orbit Tracker automatically retrieve user information, wallet bundles, Firebase tokens, and application state, then exfiltrate data to threat actor-controlled Vercel deployments. The campaign targets an active trading community with Axiom processing over $15 billion in volume across 650,000 wallets. The malicious code runs inside authenticated sessions, collecting localStorage, IndexedDB data, and API responses containing authentication tokens and wallet keys. Data is Base64-encoded and transmitted via browser navigation to avoid CORS restrictions, enabling account compromise and cryptocurrency theft.

A coordinated campaign involving 77 Firefox browser extensions has been identified, targeting cryptocurrency users by stealing wallet secrets and credentials. The campaign, named 'Offside Wallet Theft Factory,' includes 40 confirmed malicious extensions that exfiltrate sensitive data such as recovery phrases and private keys via Supabase-controlled remote switches, Cloudflare Workers, and hardcoded command-and-control infrastructure. An additional 37 extensions initially appeared benign but evolved into wallet-stealing malware. The operation ran from at least March 2026 through August 2026 and impersonated popular Web3 products like OKX, Rabby Wallet, and TronLink. The extensions use phishing interfaces, modified wallet code, and direct credential theft to enable immediate cryptocurrency theft and financial loss.